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Mercedes-Benz GLB MOT reliability
Mercedes-Benz GLBs passed their MOT first time 90% of the time across 12,092 tests in 2025. 1,253 are still licensed in Great Britain.
First-time pass rate
90%
MOTs analysed
12,092
Still licensed (GB)
1,253
Body type
Suv
Pass rate by year of first registration
In detail:
First registered
2022
2022 petrol
4,184 MOTs
Passed first time 91%. Typical mileage 25,851 (most between 19,013 and 34,070).
2023: 100% → 2024: 93% → 2025: 91%
Most common failures
- Condition: has a cut in excess of the requirements deep enough to reach the ply or cords (1.8%)
- Wipers: does not clear the windscreen effectively (0.9%)
- Tread depth below requirements of 1.6mm (0.8%)
- Brake pads: less than 1.5 mm thick (0.8%)
- Condition: has ply or cords exposed (0.8%)
2022 diesel
989 MOTs
Passed first time 90%. Typical mileage 28,974 (most between 21,917 and 37,163).
2023: 100% → 2024: 93% → 2025: 90%
Most common failures
- Condition: has a cut in excess of the requirements deep enough to reach the ply or cords (2.9%)
- Headlamp aim: too high (0.9%)
- Wipers: does not clear the windscreen effectively (0.8%)
- Condition: has ply or cords exposed (0.8%)
- Brake pads: less than 1.5 mm thick (0.7%)
Where 2022 GLBs fail
Wheels & tyres
3.9%
Brakes
1.6%
Lights & electrics
1.6%
Visibility & wipers
1.3%
Suspension & axles
0.4%
Exhaust, emissions & leaks
0.3%
Seat belts & other equipment
0.2%
Body, structure & corrosion
0.0%
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